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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.myfaces.orchestra.viewController;
20  
21  /**
22   * Each executor configured with the constructor will be asked to execute the
23   * requested method on the bean. The search will end if the executor returns "true".
24   * <p>
25   * As an example, this can be configured to first try an executor that checks whether
26   * the bean implements a specific interface, then try one that uses reflection to find
27   * magic method-names, then try one that looks for annotations.
28   */
29  public class CompositeViewControllerExecutor implements ViewControllerExecutor
30  {
31      private final ViewControllerExecutor[] viewControllerExecutors;
32  
33      public CompositeViewControllerExecutor(ViewControllerExecutor[] viewControllerExecutors)
34      {
35          this.viewControllerExecutors = new ViewControllerExecutor[viewControllerExecutors.length];
36          System.arraycopy(viewControllerExecutors, 0, this.viewControllerExecutors, 0, viewControllerExecutors.length);
37      }
38  
39  
40      public boolean invokeInitView(String beanName, Object bean)
41      {
42          for (int i = 0; i< viewControllerExecutors.length; i++)
43          {
44              if (viewControllerExecutors[i].invokeInitView(beanName, bean))
45              {
46                  return true;
47              }
48          }
49  
50          return false;
51      }
52  
53      public boolean invokePreRenderView(String beanName, Object bean)
54      {
55          for (int i = 0; i< viewControllerExecutors.length; i++)
56          {
57              if (viewControllerExecutors[i].invokePreRenderView(beanName, bean))
58              {
59                  return true;
60              }
61          }
62  
63          return false;
64      }
65  
66      public boolean invokePreProcess(String beanName, Object bean)
67      {
68          for (int i = 0; i< viewControllerExecutors.length; i++)
69          {
70              if (viewControllerExecutors[i].invokePreProcess(beanName, bean))
71              {
72                  return true;
73              }
74          }
75  
76          return false;
77      }
78  }